New York Codes, Rules and Regulations
Title 12 - DEPARTMENT OF LABOR
Chapter I - Industrial Board Of Appeals
Subchapter A - The Industrial Code
Part 4 - Low Pressure Boilers
Subpart 4-5 - Specific Requirements For Low Pressure Heating System Boilers
Section 4-5.5 - Gages

Universal Citation: 12 NY Comp Codes Rules and Regs § 4-5.5

Current through Register Vol. 47, No. 12, March 26, 2025

(a) Steam gage. A low pressure steam boiler shall have a steam gage connected to its steam space or its water column, or to its steam connection, by means of a siphon or equivalent device exterior to the boiler and of sufficient capacity to keep the gage tube filled with water and so arranged that the gage cannot be shut off from the boiler except by a cock with tee or lever handle, placed in the pipe near the gage. The handle of the cock shall be parallel to the pipe in which it is located when the cock is open.

(b) Steam gage dial.

(1) The scale on the dial of a steam boiler steam gage shall be evenly graduated in one pound increments from zero to not less than 30 psi gage pressure.

(2) The gage shall be provided with effective stops for the indicating pointer at the zero point and at the maximum pressure point. The travel of the tip of the pointer from zero to 30 psi gage pressure shall be along the scale in an arc of 180 degrees and at least one inch radius.

(3) This requirement does not apply to dials installed before March 31, 1965 which provide equivalent or better legibility.

(c) Pressure or altitude gages. A low pressure hot water boiler shall have a pressure or altitude gage connected to it or to its flow connection in such a manner that it cannot be shut off from the boiler except by a cock with tee or lever handle, placed on the pips near the gage. The handle of the cock shall be parallel to the pipe in which it is located when the cock is open.

(d) Pressure or altitude gage dial. The scale on the dial of the pressure or altitude gage shall be graduated to not less than one and one-half times the maximum allowable working pressure. The gage shall be provided with effective stops for the indicating pointer at the zero point and at the maximum pressure point.

(e) Pressure or altitude gage connections. Pressure or altitude gage connections shall be of nonferrous composition when smaller than one inch pipe size and longer than five feet between the gage and the point of connection to the boiler, and also when smaller than 1/2 inch and shorter than five feet between the gage and the point of connection to the boiler. The size of any nonferrous pipe or tubing used shall be not less then 1/4 inch.

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